Years ago, they had Crissy Walton listed as #5 on their World's Richest lists at Net Worth of $41B. Her husband died in an airplane accident and Forbes simply put her in his place. They assumed she simply inherited all of his wealth. In reality, upon his death, the estate was divided. A large portion went to the son and another portion went to a humanitarian fund, leaving her with a paltry $5B net worth.